1861 (May 8) New York N.Y. to Barcelona, Spain, blue cover with top flap only bearing 1¢ blue (24) pair and 3¢ dull red (26), tied by NYFM circular grid cancels, blue "Forwarded by Rivera & Hall, New-York" oval backstamp, red "New-York Br. Pkt. May 8" exchange cds, carried by Cunard Asia from New York May 8th to Queenstown arriving May 20th, red London (5.21.61) transit backstamp, Barcelona (5.25) arrival backstamp and black "4.Rs." reales due rating handstamp, Very Fine and scarce franking for the 5¢ British open mail rate. Estimate  $200 - 300. $0 (Image)